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Simultaneous biodegradation of phenol and n-hexadecane by cryogel immobilized biosurfactant producing strain Rhodococcus wratislawiensis BN38

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Hristov A. E., Christova N. E., Kabaivanova L. V., Nacheva L. V., Stoineva I. B., Petrov P. D.

Polish Journal of Microbiology

2016

tom 65

nr 3

The capability of the biosurfactant-producing strain Rhodococcus wratislawiensis BN38 to mineralize both aromatic and aliphatic xenobiotics was proved. During semicontinuous cultivation 11 g/l phenol was completely degraded within 22 cycles by Rhodococcus free cells. Immobilization in a cryogel matrix was performed for the first time to enhance the biodegradation at multiple use. A stable simultaneous hydrocarbon biodegradation was achieved until the total depletion of 20 g/l phenol and 20 g/l n-hexadecane (40 cycles). The alkanotrophic strain R. wratislawiensis BN38 preferably degraded hexadecane rather than phenol. SEM revealed well preserved cells entrapped in the heterogeneous super-macroporous structure of the cryogel which allowed unhindered mass transfer of xenobiotics. The immobilized strain can be used in real conditions for the treatment of contaminated industrial waste water.

Ograniczanie wyników

1 Polish Journal of Microbiology

1 Christova N. E.

1 Hristov A. E.

1 Kabaivanova L. V.

1 Nacheva L. V.

1 Petrov P. D.

1 Stoineva I. B.

1 2016

Wyniki wyszukiwania

Simultaneous biodegradation of phenol and n-hexadecane by cryogel immobilized biosurfactant producing strain Rhodococcus wratislawiensis BN38